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k+ reabsorption in proximal tubule

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6 years ago

Date created

Mar 14, 2020

Cards (26)

Section 1

(26 cards)

k+ reabsorption in proximal tubule

Front

follows h20 which follwed na (just like urea) diffusion

Back

positive control on thirst

Front

1. baroreceptors sensing low plasma volume 2.osmoreceptors sensing high osmolarity 3. dry mouth 4. more angiontensing 2 (animals only)

Back

Loss of H+

Front

1. vomiting or urine 2. hyperventilation 3. use in metabolism

Back

adh is main

Front

regulator of osmolarity

Back

respiratory acidosis

Front

high h high hco3- high co2 causes

Back

less adh

Front

more h20 excreted (occurs when low osmolartity)

Back

excess H+

Front

will react w hpo4- in lumen

Back

sweating effects

Front

1. decrease gfr 2. increase aldoeserone 3. increase adh more reabsorption

Back

alcohol

Front

inhibits ADH less h20 reabsorption

Back

more aldosterone

Front

more k+ excreted more channels on collecing duct

Back

sweat

Front

out of ecf contains h20 and some nacl hypoosmotic x g

Back

normal ph

Front

7.4

Back

decrease in osmolaratity

Front

decrease in osmoreceptor firing LESS ADH SECRETION

Back

k+ gradient

Front

on basolateral membrane main driving force of secretion

Back

negative control on thirst

Front

metering of h20 by gi tract

Back

metabolic acidosis

Front

high h+ low hco3- causes low co2

Back

metabolic alkalosis

Front

low h+ high hco3- causes high co2

Back

respiratory alkalosis

Front

low h low hco3- low co2 causes

Back

decrease in plasma volume

Front

increase in adh

Back

extreme h+

Front

glutamine breakdown and H+ forms ammonium

Back

increase in osmoreceptor firing

Front

more adh secreted more h20 reabsorbed

Back

K+ pathway

Front

1. filtered 2. reabsorbed in proximally 3. secreted in distal (controlled by aldosterone)

Back

baroreceptors

Front

sense decrease in map make more renin and angio 2

Back

hco3 reabsorbed

Front

into capillaries h+ reacts w different hco3- molecule in tubular lumen

Back

aldosterone two impacts

Front

1. increase K+ secretion/excretion 2. increase NA reabsorption/less na excreted

Back

Gain of H+

Front

1. generation form co2 2. production of acid via metabolsm of proteins 3. loss of hco3 in diarrhea or urine

Back